hi guys,
 
 below code  i am caching   dictonary values. i have one doubt if  cached dictionary value changed backend how to update the value here( here i am caching value 20 mins suppose if they update i need to update cached value right)   please help on me guys
 
  
 
Dictionary Cache = new Dictionary();
var cache = new Cache();
// Cache.Add(dictionaryItem.Phrase,TimeSpan.FromMinutes(25))
cache.Store(dictionaryItem.TemplateId.ToString(), dictionaryItem.Phrase, TimeSpan.FromMinutes(20));
// Console.WriteLine();
return dictionaryItem.Phrase;
/////////////
 
public class Cache
{
private readonly Dictionary> _cache = new Dictionary>();
public void Store(TKey key, TValue value, TimeSpan expiresAfter)
{
_cache[key] = new CacheItem(value, expiresAfter);
}
public TValue Get(TKey key)
{
if (!_cache.ContainsKey(key)) return default(TValue);
var cached = _cache[key];
if (DateTimeOffset.Now - cached.Created >= cached.ExpiresAfter)
{
_cache.Remove(key);
return default(TValue);
}
return cached.Value;
}
}